Is 5423 a prime number?
No, 5423 is not a prime number. It is divisible by 11: 5423 = 11 × 493.
Is 5423 prime?
Pick any whole number from 1 to 10,000.
How to work it out
- 1
A prime number has exactly two factors: 1 and itself.
- 2
It is enough to test the primes up to √5423 ≈ 73.64. If none of them divides 5423, it is prime.
- 3
11 divides 5423 exactly, so it is not prime. Its prime factorisation is
LaTeX source of the formulas on this page
\[ 5423 = 11 \times 17 \times 29 \]
Testing 5423 by the primes up to its square root
| Prime | Division | Result |
|---|---|---|
| 2 | 5423 ÷ 2 | leaves 1 |
| 3 | 5423 ÷ 3 | leaves 2 |
| 5 | 5423 ÷ 5 | leaves 3 |
| 7 | 5423 ÷ 7 | leaves 5 |
| 11 | 5423 ÷ 11 | divides exactly (493) |
| 13 | 5423 ÷ 13 | leaves 2 |
| 17 | 5423 ÷ 17 | divides exactly (319) |
| 19 | 5423 ÷ 19 | leaves 8 |
| 23 | 5423 ÷ 23 | leaves 18 |
| 29 | 5423 ÷ 29 | divides exactly (187) |
| 31 | 5423 ÷ 31 | leaves 29 |
| 37 | 5423 ÷ 37 | leaves 21 |
Questions
Is 5423 a prime number?
No, 5423 is not a prime number. It is divisible by 11: 5423 = 11 × 493.
What is the next prime after 5423?
5431.
What is the prime number before 5423?
5419.
What are the factors of 5423?
1, 11, 17, 29, 187, 319, 493, 5423.